2 problems

Let $P$ be a harmonic polygon with area $A$, sidelengths $s_i$, and angles $\theta_i$ as used in the paper. Sine-angle invariant conjecture. The quantity … is invariant. Equivalent…

An equiaffine surface area is an affine surface area invariant under special affine transformations, and for real $p>0$, the $L_p$ affine surface areas are denoted by $\Omega_p(K)$…